Subject Rankings
University of Maryland Center for Environmental Science Subject Rankings 2025
AD Scientific Index (Alper-Doger Scientific Index) offers the broadest spectrum of branches, providing analysis in 13 main fields and 197 sub-branches at global, national, and regional levels. These analyses can be based on indicators such as the H-index, i10-index, and citation count, as well as their values from the last 6 years. As of Nov 09, 2024, rankings are according to the Total H Index. BETA VERSION: The subject field rankings for the world, regions, countries, and universities are currently in beta. This is due to the exclusion of (901.409) scientists categorized under 'others,' whose profiles cannot yet be determined, edited, or classified. As these fields are updated, the rankings will adjust accordingly. Please keep this in mind. See Also: [University Subject Rankings]
* Total H IndexRankings
Ranking Based On Selection
:1
Biogeochemistry
Metrics
H-Index
i10 Index
Citation Counts
121
246
74,269
* Total H IndexRankings
Ranking Based On Selection
:2
eutrophication
nitrogen cycling
algal blooms
harmful algae
Metrics
H-Index
i10 Index
Citation Counts
88
217
34,523
* Total H IndexRankings
Ranking Based On Selection
:3
marine ecology
Metrics
H-Index
i10 Index
Citation Counts
77
133
33,873
* Total H IndexRankings
Ranking Based On Selection
:4
Ecoogical Network Analysis
Science and Religion
Metrics
H-Index
i10 Index
Citation Counts
72
161
21,835
* Total H IndexRankings
Ranking Based On Selection
:5
Protists in planktonic food webs
microzooplankton
Mixotrophy
algal blooms
Metrics
H-Index
i10 Index
Citation Counts
71
140
19,336
* Total H IndexRankings
Ranking Based On Selection
:6
Fish Ecology
Metrics
H-Index
i10 Index
Citation Counts
68
187
17,410
* Total H IndexRankings
Ranking Based On Selection
:7
fisheries science
fish ecology
oceanography
marine science
fisheries management
Metrics
H-Index
i10 Index
Citation Counts
66
174
24,430
* Total H IndexRankings
Ranking Based On Selection
:8
Molecular Biology
Metrics
H-Index
i10 Index
Citation Counts
65
181
13,068
* Total H IndexRankings
Ranking Based On Selection
:9
Marine microbiology
Marine Biotechnology
Metrics
H-Index
i10 Index
Citation Counts
64
120
11,352
* Total H IndexRankings
Ranking Based On Selection
:10
fish
model
Metrics
H-Index
i10 Index
Citation Counts
63
180
18,702
* Total H IndexRankings
Ranking Based On Selection
:11
Interdisciplinary Science
Land Cover/Use Change
Climate Change
Conservation Biology
Landscape Dynamics
Metrics
H-Index
i10 Index
Citation Counts
61
145
25,942
* Total H IndexRankings
Ranking Based On Selection
:12
Benthic ecology
Metrics
H-Index
i10 Index
Citation Counts
60
157
19,107
* Total H IndexRankings
Ranking Based On Selection
:13
Biological oceanography
zooplankton ecology
hypoxia effects on pelagic food webs
Metrics
H-Index
i10 Index
Citation Counts
59
103
13,767
* Total H IndexRankings
Ranking Based On Selection
:14
Marine biogeochemistry
Metrics
H-Index
i10 Index
Citation Counts
55
135
14,245
* Total H IndexRankings
Ranking Based On Selection
:15
Marine Microbial Ecology
Metrics
H-Index
i10 Index
Citation Counts
53
117
10,569
* Total H IndexRankings
Ranking Based On Selection
:16
biological oceanography
Metrics
H-Index
i10 Index
Citation Counts
49
103
7,506
* Total H IndexRankings
Ranking Based On Selection
:17
coastal oceanography
ecosystem rehabilitation
climate change
Metrics
H-Index
i10 Index
Citation Counts
49
97
20,088
* Total H IndexRankings
Ranking Based On Selection
:18
oceanography
biogeochemistry
sediment
Metrics
H-Index
i10 Index
Citation Counts
48
91
11,402
* Total H IndexRankings
Ranking Based On Selection
:19
biogeochemistry
watershed hydrology
watershed ecology
estuarine ecology
Metrics
H-Index
i10 Index
Citation Counts
46
77
10,752
* Total H IndexRankings
Ranking Based On Selection
:20
species distribution modelling
global change
biodiversity
macroecology
biogeography
Metrics
H-Index
i10 Index
Citation Counts
45
72
10,401
* Total H IndexRankings
Ranking Based On Selection
:21
Physical oceanography
estuarine/coastal dynamics
climate change
biophysical interactions
ocean
Metrics
H-Index
i10 Index
Citation Counts
44
89
6,231
* Total H IndexRankings
Ranking Based On Selection
:22
Marine and freshwater biogeochemistry
Environmental Engineering
Environmental Chemistry
Metrics
H-Index
i10 Index
Citation Counts
43
78
5,989
* Total H IndexRankings
Ranking Based On Selection
:23
recruitment
fishery management
crab fisheries
stock assessment
Metrics
H-Index
i10 Index
Citation Counts
43
89
7,783
* Total H IndexRankings
Ranking Based On Selection
:24
Estuaries
Environmental Science
Physical Oceanography
Sediment Transport
Graduate Education
Metrics
H-Index
i10 Index
Citation Counts
43
68
5,919
* Total H IndexRankings
Ranking Based On Selection
:25
photosynthesis
denitrification
phytoplankton
Metrics
H-Index
i10 Index
Citation Counts
42
56
11,702
Eric A Davidson
Metrics
H-Index
i10-Index
Citation Counts
121
246
74,269
Patricia Glibert
Metrics
H-Index
i10-Index
Citation Counts
88
217
34,523
eutrophication
nitrogen cycling
algal blooms
harmful algae
William C Dennison
Metrics
H-Index
i10-Index
Citation Counts
77
133
33,873
Robert Ulanowicz
Metrics
H-Index
i10-Index
Citation Counts
72
161
21,835
Ecoogical Network Analysis
Science and Religion
Diane Stoecker
Metrics
H-Index
i10-Index
Citation Counts
71
140
19,336
Protists in planktonic food webs
microzooplankton
Mixotrophy
algal blooms
David Secor
Metrics
H-Index
i10-Index
Citation Counts
68
187
17,410
Edward D Houde
Metrics
H-Index
i10-Index
Citation Counts
66
174
24,430
fisheries science
fish ecology
oceanography
marine science
fisheries management
Allen R Place
Metrics
H-Index
i10-Index
Citation Counts
65
181
13,068
Russell Hill
Metrics
H-Index
i10-Index
Citation Counts
64
120
11,352
Marine microbiology
Marine Biotechnology
Kenneth A Rose
Metrics
H-Index
i10-Index
Citation Counts
63
180
18,702
Mark A Cochrane
Metrics
H-Index
i10-Index
Citation Counts
61
145
25,942
Interdisciplinary Science
Land Cover/Use Change
Climate Change
Conservation Biology
Landscape Dynamics
Jacqueline M Grebmeier
Metrics
H-Index
i10-Index
Citation Counts
60
157
19,107
Michael Roman
Metrics
H-Index
i10-Index
Citation Counts
59
103
13,767
Biological oceanography
zooplankton ecology
hypoxia effects on pelagic food webs
Raleigh Hood
Metrics
H-Index
i10-Index
Citation Counts
49
103
7,506
Donald Boesch
Metrics
H-Index
i10-Index
Citation Counts
49
97
20,088
coastal oceanography
ecosystem rehabilitation
climate change
Jeffrey Cornwell
Metrics
H-Index
i10-Index
Citation Counts
48
91
11,402
oceanography
biogeochemistry
sediment
Thomas R Fisher
Metrics
H-Index
i10-Index
Citation Counts
46
77
10,752
biogeochemistry
watershed hydrology
watershed ecology
estuarine ecology
Matthew C Fitzpatrick
Metrics
H-Index
i10-Index
Citation Counts
45
72
10,401
species distribution modelling
global change
biodiversity
macroecology
biogeography
Ming Li
Metrics
H-Index
i10-Index
Citation Counts
44
89
6,231
Physical oceanography
estuarine/coastal dynamics
climate change
biophysical interactions
ocean
Michael Gonsior
Metrics
H-Index
i10-Index
Citation Counts
43
78
5,989
Marine and freshwater biogeochemistry
Environmental Engineering
Environmental Chemistry
Thomas Miller
Metrics
H-Index
i10-Index
Citation Counts
43
89
7,783
recruitment
fishery management
crab fisheries
stock assessment
Lawrence Sanford
Metrics
H-Index
i10-Index
Citation Counts
43
68
5,919
Estuaries
Environmental Science
Physical Oceanography
Sediment Transport
Graduate Education
Todd Kana
Metrics
H-Index
i10-Index
Citation Counts
42
56
11,702